Finding the Fourth Proportional to 144,738.30, 199,727.91 and 81,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,738.30 : 199,727.91 = 81,061.50 : x
2. Step 2: Convert to fraction form
   144,738.30/199,727.91 = 81,061.50/x
3. Step 3: Cross multiply
   144,738.30x = 199,727.91 × 81,061.50
4. Step 4: Simplify right side
   144,738.30x = 16,190,243,976.47
5. Step 5: Solve for x
   x = 16,190,243,976.47/144,738.30
6. Step 6: Final answer
   x = 111,858.74